Vibration Testing - Reviewing the State of the Art

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Description

Vibration testing has advanced significantly over the past several decades. Comparatively speaking, enormous volumes of acceleration data are now available for virtually every vibration test. This data is readily compressed into frequency response functions and modal models. The modal models are compared with corresponding analytical models. Model updating techniques are used to adjust analytical model parameters to minimize the differences between model and test frequencies and mode shapes. These are very positive developments. Model and testing limitations lie in areas other than the direct recording and translation of acceleration data to modal models. Two major limitations of models are the ... continued below

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12 p.

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Hunter, N. F. June 23, 1999.

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Description

Vibration testing has advanced significantly over the past several decades. Comparatively speaking, enormous volumes of acceleration data are now available for virtually every vibration test. This data is readily compressed into frequency response functions and modal models. The modal models are compared with corresponding analytical models. Model updating techniques are used to adjust analytical model parameters to minimize the differences between model and test frequencies and mode shapes. These are very positive developments. Model and testing limitations lie in areas other than the direct recording and translation of acceleration data to modal models. Two major limitations of models are the inability to model damping and the limited degree to which nonlinear behavior is incorporated into model construction and model validation. Much more thorough understanding of damping mechanisms in real structures is required. Currently we know enough to bound the range of damping values for some typical structures. A much more thorough understanding of mechanical joints is required to accurately model structural joints. Some studies now underway offer a beginning to such understanding.

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12 p.

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OSTI as DE00761113

Medium: P; Size: 12 pages

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  • SD 2000 Conference, No conference location supplied, No conference dates supplied

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  • Report No.: LA-UR-99-3413
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 761113
  • Archival Resource Key: ark:/67531/metadc718076

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Office of Scientific & Technical Information Technical Reports

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  • June 23, 1999

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 6, 2017, 8:12 p.m.

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Hunter, N. F. Vibration Testing - Reviewing the State of the Art, article, June 23, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc718076/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.